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Thu, 20 Feb 2025 04:22:44 -0800 (PST) From: Nick Chan Date: Thu, 20 Feb 2025 20:21:48 +0800 Subject: [PATCH 7/9] arm64: dts: apple: t8011: Add CPU caches Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250220-caches-v1-7-2c7011097768@gmail.com> References: <20250220-caches-v1-0-2c7011097768@gmail.com> In-Reply-To: <20250220-caches-v1-0-2c7011097768@gmail.com> To: Sven Peter , Janne Grunau , Alyssa Rosenzweig , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Nick Chan X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1642; i=towinchenmi@gmail.com; h=from:subject:message-id; bh=zI2mU3THGBI/qZwjr8HPXhOqtbnEjJ7My15CsvuB0w8=; b=owEBbQKS/ZANAwAIAQHKCLemxQgkAcsmYgBntx5/AKj5vauHYhz3DfFfIX2pH9PD+H337k4Uk 5uSEa5+wZqJAjMEAAEIAB0WIQRLUnh4XJes95w8aIMBygi3psUIJAUCZ7cefwAKCRABygi3psUI JLuhD/wM4qvX5zEl3VWs0aFrwG2bhjCQ4fsHzRIbMX4t/QUJiSFPMj4aZzuijF356s9GNDgoDKn EZ5g9VoT8Dg+98rBT6uqeHXj2L6bHTcyTiy9t4xY/NhaGE4ypIyshyoNL7DiUsC6fy1YGWi5rcV McmYeWDyZo5ViKj7VYF30kYsHNSUTArkp7AdtInWMs5AKNbryuLtLsqDAQhDxVV7r5/IKlDHWB7 7502iVR24IfrXOjvIhvCn07cvdTVFMXOtXWTkO8KwI7BagcMRBp+R5mSjvD5n3kadAe1KM5CoZk LdlYuMnzi2WEJ2SD8ITlgPNpmxbRMGtn6UDc7zAUn0WehYWBKImzKTbfha7a5140/utSUhgl9Zp ctahKcWyNgZcP2i15R6XNk+K98qnNc6Fq+QGlv0g4RsgLyQPPZt7WGdgMxTuNiRxkYvlkLt8r4m JiNtxJ2Tiy24xVvz00Av9kuXL5prj87h0s+4jqVB6ipQYpbyK/PlgfISQwBkZmxB1n1pYktm8Ck K1/1xOEE+YEDxlu/nDUXDQwjsi/KMePbGRLq31s8deKjKMxTm+zYyCyQbpFVj9DEh/2XoUXVo3k 1xwujG1l5vIIYbNrqcVuuqRLTs0pBohjQbv0NPnsJad4wv/9+zN1NwWxsAZsfj4MeK1pF4xY6Ob Q7UxJoG4IhI/Q5Q== X-Developer-Key: i=towinchenmi@gmail.com; a=openpgp; fpr=4B5278785C97ACF79C3C688301CA08B7A6C50824 Add information about CPU caches in the P-cluster of Apple A10X SoC. Due to "Apple Fusion Architecture" big.LITTLE switcher, only caches from one of the clusters can be used at any given moment. Signed-off-by: Nick Chan --- arch/arm64/boot/dts/apple/t8011.dtsi | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/arm64/boot/dts/apple/t8011.dtsi b/arch/arm64/boot/dts/app= le/t8011.dtsi index 5b280c896b760dc8b759bf38dae79060e34dfc19..974f78cc77cfe28d3c26a52a292= b643172d8f5bd 100644 --- a/arch/arm64/boot/dts/apple/t8011.dtsi +++ b/arch/arm64/boot/dts/apple/t8011.dtsi @@ -36,6 +36,9 @@ cpu0: cpu@0 { performance-domains =3D <&cpufreq>; enable-method =3D "spin-table"; device_type =3D "cpu"; + next-level-cache =3D <&l2_cache>; + i-cache-size =3D <0x10000>; /* P-core */ + d-cache-size =3D <0x10000>; /* P-core */ }; =20 cpu1: cpu@1 { @@ -46,6 +49,9 @@ cpu1: cpu@1 { performance-domains =3D <&cpufreq>; enable-method =3D "spin-table"; device_type =3D "cpu"; + next-level-cache =3D <&l2_cache>; + i-cache-size =3D <0x10000>; /* P-core */ + d-cache-size =3D <0x10000>; /* P-core */ }; =20 cpu2: cpu@2 { @@ -56,6 +62,16 @@ cpu2: cpu@2 { performance-domains =3D <&cpufreq>; enable-method =3D "spin-table"; device_type =3D "cpu"; + next-level-cache =3D <&l2_cache>; + i-cache-size =3D <0x10000>; /* P-core */ + d-cache-size =3D <0x10000>; /* P-core */ + }; + + l2_cache: l2-cache { + compatible =3D "cache"; + cache-level =3D <2>; + cache-unified; + cache-size =3D <0x800000>; /* P-cluster */ }; }; =20 --=20 2.48.1